CAN ANYONE TELL ME WHAT IS THE BACKGROUND TO THE HEALTH AND SAFETY AT WORK ECT ACT 1974?

Can you verify me what is the backwards connector to the Health and Safety at Work ect Act 1974. and how this came to be ???????

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1. WHAT IS THE HEALTH AND SAFETY ACT 1974 ALL ABOUT AND WHAT ARE THEIR RULES AND REGULATIONS?
2. WHAT ARE YOUR RESPONSIBILITIES REGARDING HEALTH AND SAFETY AT WORK…??
3. WHAT DOES HEALTH AND SAFETY AT WORK ACT MEAN?